Valve having a valve housing (1), a slide (3) axially shiftable in the valve housing (1), at least one valve seat (2) for the slide (3), a rotatable operating shaft (4) having in its one end a laterally offset stub-shaft (6) adapted to transfer the rotary movement of the operating shaft (4) into a corresponding axial movement of the slide (3) towards its end position as defined by the valve seat (2). The valve is characterized by a coupling member (7) provided on the stub-shaft (6) and having a first oblique surface, a second oblique surface provided on the slide (3) and complementary to the first oblique surface, additional rotation of the operating shaft (4), when the slide (3) occupies its end position being absorbed by mutual relative movement between the first and second surfaces and a complementary movement of the coupling member (7) along the stub-shaft (6). The valve is hereby latched in its end position.
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